Bondline Structure

Since we are going to be drawing A LOT of molecules over the next year, it makes sense to find an easier way to draw them. Hence, I now present to you :::drumroll::: the bondline structure!

*Also known as skeletal structure or line-angle structure. 

Things You Don't Have to Draw

  • Carbons are implied: Every corner is assumed to represent a carbon.
  • Hydrogens are implied: Carbon is assumed to possess enough hydrogens to fill its octets.
  • Lone Pairs are implied: Heteroatoms are assumed to possess enough electrons to fill their octets.
  • Formal Charges are used to indicate when an atom does not satisfy its bonding preference.

Watch Out: ALL hydrogens on heteroatoms MUST be drawn explicitly. 

Example: How many implied hydrogens does each labeled carbon have? 

1m

Example: Convert each structure into a line-angle structure. Be sure to assign ALL necessary formal and net charges.

1m

Example: Convert each structure into a line-angle structure. Be sure to assign ALL necessary formal and net charges.

3m

Hint: Remember that you need to include formal charges if atoms are not at their bond preference. 

Example: Convert each structure into a line-angle structure. Be sure to assign ALL necessary formal and net charges.

3m

We’ll be drawing these for the rest of the semester. Hope you liking them so far!